The Buick Enspire is the brand's upcoming replacement for the Envision. While the test mule in this photo wears heavy camouflage, the earlier Enspire concept from the 2018 Beijing Motor Show might provide a better idea of what to expect. That wears heavily sculpted styling, particularly around the rear haunches.
The production Enspire rides on the General Motors E2 platform like the Cadillac XT4. This means the pair could share some powertrains and tech.